Home / 308,214.15-462,409.79-128,264.55

Finding the Fourth Proportional to 308,214.15, 462,409.79 and 128,264.55

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Solution

The fourth proportional to 308,214.15, 462,409.79 and 128,264.55 is: 192,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,214.15 : 462,409.79 = 128,264.55 : x
  2. Step 2: Convert to fraction form
    308,214.15/462,409.79 = 128,264.55/x
  3. Step 3: Cross multiply
    308,214.15x = 462,409.79 × 128,264.55
  4. Step 4: Simplify right side
    308,214.15x = 59,310,782,988.62
  5. Step 5: Solve for x
    x = 59,310,782,988.62/308,214.15
  6. Step 6: Final answer
    x = 192,433.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.